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  <h1 class="topictitle1">Checking Whether the Target Recovery Host Is a Host in the HACS Cluster</h1>
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   <p>Before recovering data to a host in the HACS cluster, freeze the cluster. You can perform the following steps to check whether the target host is in the HACS cluster.</p>
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    <li><span>Log in to the Oracle database host.</span><p></p><p>Use PuTTY to log in to the Oracle database host and run the <strong>su - root</strong> command to switch to user <strong>root</strong>.</p> <p></p></li>
    <li><span>Run the following command to check whether the HACS is running on the host:</span><p></p><p><strong>/etc/init.d/corosync status</strong></p> <p>If information similar to the following is displayed, the HACS is running on the current host:</p> <pre class="screen">linux-sv0z:~# /etc/init.d/corosync status
corosync (pid 9854) is running...</pre> <p></p></li>
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